Tetraphenylethylene‐Based Multicomponent Emissive Metallacages as Solid‐State Fluorescent Materials. Issue 22 (19th April 2021)

• Record Type: Journal Article
• Authors: Mu, Chaoqun; Zhang, Zeyuan; Hou, Yali; Liu, Haifei; Ma, Lingzhi; Li, Xiaopeng; Ling, Sanliang; He, Gang; Zhang, Mingming
• Is Part Of: Angewandte Chemie international edition. Volume 60:Issue 22(2021)
• Page Start: 12293
• Page End: 12297
• Publication Date: 2021-04-19
• Subjects: aggregation-induced emission -- coordination-induced emission -- metallacages -- self-assembly -- solid-state fluorescent materials; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202100463
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The construction of solid‐state fluorescent materials with high quantum yield and good processability is of vital importance in the preparation of organic light‐emitting devices. Herein, a series of tetraphenylethylene (TPE)‐based multicomponent emissive metallacages are prepared by the coordination‐driven self‐assembly of tetra‐(4‐pyridylphenyl)ethylene, cis‐Pt(PEt3 )2 (OTf)2 and tetracarboxylic ligands. These metallacages exhibit good emission both in solution and in the solid state because the coordination bonds and aggregation restrict the molecular motions of TPE synergistically, which suppresses the non‐radiative decay of these metallacages. Impressively, one of the metallacages achieves very high fluorescence quantum yield ( Φ F =88.46 %) in the solid state, which is further used as the coatings of a blue LED bulb to achieve white‐light emission. The study not only provides a general method to the preparation of TPE‐based metallacages but also explores their applications as solid‐state fluorescent materials, which will promote the future design and applications of metallacages as useful emissive devices. Abstract : Tetraphenylethylene‐based multicomponent emissive metallacages with high fluorescence quantum yield and good processability were prepared. These metallacages were further utilized as coatings of a blue light‐emitting bulb to prepare white‐light emitting diodes, demonstrating their applications as solid‐state fluorescent materials.